No, your local Catholic priest is not required to open the church to gay wedding ceremonies, just as they are not required to perform weddings for mixed-religio

No, your local Catholic priest is not required to open the church to gay wedding ceremonies, just as they are not required to perform weddings for mixed-religion couples, or divorced persons, or any of a number of other reasons why they might object. Now, your local Justice of the Peace who happens to be Catholic? That's a different story. As a government employee they cannot discriminate.